: battery replacement question?



STS-4000
06-17-13, 06:05 PM
Hey guys, I'm going to be replacing my battery soon and I wanted to know if a 78 red top Optima battery would fit my car. I would appreciate it if you guys could help me with this.

Thanks.

EChas3
06-17-13, 08:08 PM
We've got them in our STS'. There's a model w/o top posts that are a tight fit, but they fit.

STS-4000
06-17-13, 11:02 PM
Really? It still fits even with the battery cover on?

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Oh and does it seat well in the battery tray too?

msa9167
06-18-13, 06:19 AM
I have the optima red top 34/78 in my 2005 STS V8 AWD 1SG and had no problems installing the battery. The optima 34/78 has top post and side post. The only issue I had was the oem Cadillac battery hold down puck wasn't holding the battery down tight. I had to use the optima battery puck that came with the optima battery.

Also the optima battery 78 does have the side post only and does fit. At the bottom of my post is a link from the STS V forum for the DIY install of the optima red top 78. I was going to get the 78 over the 34/78, but I had a 25% or a 30% off coupon from Advance Auto Parts and they were out of the 78. I think I paid either $130 or $140 for the 34/78 after the coupon. Also none of the auto parts stores listed a optima battery fit for the
2005 to 2006 STS but I can confirm the 34/78 red top and the 78 red top does fit. Here is a picture of the 34/78 that I got for my 2005 STS before I installed it.

117602

Link to the DIY http://www.cadillacforums.com/forums/cadillac-sts-v-series-forum/157174-replacing-car-battery-other-than-oem.html

Hope this helps you or anybody else.
Marc

STS-4000
06-18-13, 10:29 AM
Sweet!!! Thanks for the help guys I really appreciate it! I'm going to pick up a red top 78 Optima first thing tomorrow morning

Submariner409
06-18-13, 10:40 AM
Why ? Because it looks different or because it will make some significant difference in your car's electrical system operation ?

The Optima battery is spec'd at 800 CCA, and your original AC Delco battery is about 880 CCA (?). What does a 10% decrease in potential cold start power do for you ??

PontiacV8
06-18-13, 12:18 PM
and your original AC Delco battery is about 880 CCA (?). What does a 10% decrease in potential cold start power do for you ??

...well...a sigma-based 2005 - 2007 STS is factory-equipped with an AC Delco Type 101 battery. These (and replacement) are rated something round 650 CCA (+/-)...:) (...from 2008-up a change to a new top post/post change design Type -IIRC- 48 )

Standard Type 78 are cheaper...and 78 Optima (seems most?) better than these 101...

...here an image of my AC Delco Type 101 spare...:D
http://i44.tinypic.com/2lnafe9.jpg

EChas3
06-18-13, 08:20 PM
Yep Sub. I was very surprised to find the Delco 101 rated so puny. Maybe that's one reason the STS is so hard on them.

I could have probably run my OEM a while longer but I didn't want to lug a jump-pack. We took my car on a driving vacation last Summer, exploring the Lincoln history in Indiana & Kentucky. Remember that July heat? I figured 7 years from an OEM Delco was good value. Why push it.

Why an Optima? I got a decent price & the money stayed close to home in Wisconsin (its a Johnson Controls Company like most battery brands.) I'm also attracted by a maintenance-free battery that really is maintenance-free (many should have distilled water added regardless of their slogans.) I know a lot of people that rave about Optima's durability and electrical characteristics.

It's been in my car for about a year. My wife has had hers for a bit longer because her Delco went bad (rentals are hard on batteries.) I'll post how it goes.

mckellyb
06-20-13, 11:32 PM
That's one thing which caught my eye when I was Carfaxing the STS's when I was searching for mine. Every one of them, including the one I purchased, had at least one, usually two, battery replacements under warranty.

Yeah...raised an eyebrow. I'm going to put the largest one in there I can when this one keels over.

Good on ya, EChas3! "Maintenance free" means they put decals over the fill ports.

/facepalm

At least Optimas are the real deal as far as this goes.

jzamo
06-21-13, 03:01 PM
what about yellow tops does anybody know if those fit an 07 sts ?

EChas3
06-21-13, 08:50 PM
I think the top posts will prevent re-installation of the battery cover. If they have a size 78 w/o them like the Red-Top, it should fit. I wouln't be comforable with top posts so close to the hood.

Why would you want a deep-cycle-type battery in your STS?

Ludacrisvp
06-21-13, 10:35 PM
The 08 (at least mine) comes with top post battery from the factory...

EChas3
06-22-13, 12:18 AM
^^^!!! I had no idea. Both ours has OEM Delco 101 side-terminal-only batteries.

Any other member care to comment?

PontiacV8
06-22-13, 12:29 AM
^^^!!! I had no idea. Both ours has OEM Delco 101 side-terminal-only batteries.

Any other member care to comment?


...like I have written before...


...from 2008-up a change to a new top post/post change design Type -IIRC- 48



The 08 (at least mine) comes with top post battery from the factory...

...change to a new design of battery for 2008....Type 48 or 91 or something like that...change to top post AND change of posts from left to right and vice versa...incl. new type of connectors and wires...

...and 2008-up doesn't use the separate battery cover from 05 - 07 cars any more...

Ludacrisvp
06-22-13, 12:35 AM
...and 2008-up doesn't use the separate battery cover from 05 - 07 cars any more...

I have no battery cover at all on mine. Doesn't look like there ever was one either.
Also note that my 08 is also on (at least) its second battery... Dealer put in a new one before delivery.

PontiacV8
06-22-13, 12:40 AM
...yes...there is no separate battery cover at all for 2008-up STS...cover was an 05 -07 part....many things changed for redesign 2008...even under the hood....:D ;) :)

EChas3
06-22-13, 12:41 AM
I wonder what the new one is rated for CCA. The 101 was under-matched to the STS. The 78 seems more in line with my expectations.

PontiacV8
06-22-13, 01:07 AM
I wonder what the new one is rated for CCA. The 101 was under-matched to the STS. The 78 seems more in line with my expectations.

AC Delco website today shows (as part or replacement) for a 2008-up STS an AC Delco Type 48-7YR

7 Year Battery 4Dr ; Top post-Battery CCA rating 770 ; 48 BCI ; 0730 CCA

mckellyb
06-26-13, 06:33 PM
Ironic this thread should appear so recently.

Got in to leave work, today, push the button... 'click'.

Yeah. For joy.

wake
06-27-13, 12:18 AM
Be a little weary about the Optimas. I'm on the last one I'll ever own due to the quality that has gone in the dumper since they moved production to Mexico.

I've had probably 10 red tops in my lifetime in several vehicles, the first two made in the U.S.A. lasted more than 8 years and were still kicking strong when I sold the vehicles. The ones since then barely last the exchange warranty if they go that long.

Also, check the warranty. Optima got rid of the 3 years pro-rated warranty that kicks in after the 3 year exchange warranty (six years total). All red tops sold now are strictly 3 year exchange with no pro-rated warranty. $200+ for a 3 year battery isn't worth it in my opinion. I just exchanged the last redtop in my garage that didn't even last a year. That one had the 3 year pro-rated warranty also attached to it. The exchanged battery only carries the remainder of the 3 years from the purchase of the first battery that failed, so if this one fails in 2 years and 6 months then I'm out of luck as I lost the pro-rated coverage when I exchanged the first one.

No long term experience yet with the battery I switched to, Sears Diehard AGM but I was willing to give it a try for it's 3 year exchange, 100 month pro-rated warranty, and about $50 cheaper than Optima. Hopefully I'll have better luck than with the Optima.

KRSTS
06-27-13, 11:07 AM
I will stick with Interstates

Guy.Seminerio
06-27-13, 02:18 PM
I have long been an Interstate loyalist.

EChas3
06-27-13, 09:06 PM
Interstate is one more battery made by Johnson Controls.

30 years ago, Exide ruled the roost. Now, it's Johnson Controls. Knowing who's next is worth $$$$

wake
06-29-13, 01:13 AM
I will stick with Interstates

I haven't had an interstate battery in 25 years, I remember them being a quality battery back then.

Guy.Seminerio
06-29-13, 03:38 AM
My uncle's best friend during youth (so close I call him uncle) has a shop in queens, ny and their go to battery is interstate. Nothing but good things to say so interstate it is.